CVE-2026-93784

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-93784", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-18T17:59:28.788Z", "datePublished": "2026-09-24T16:02:18.067Z", "dateUpdated": "2026-10-03T10:57:19.164Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-03T10:57:19.164Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()\n\nThe KASAN allocation trace shows that a malformed IE buffer is\nstored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any\nvalidation. The crash trace shows that a subsequent SIOCSIWESSID\ntriggers a connection attempt which calls cfg80211_sme_get_conn_ies()\nto process the stored IE buffer, causing:\n\n - An out-of-bounds read in skip_ie() which reads ies[pos+1]\n (the length byte) past the end of the 1-byte buffer.\n\n - An integer underflow in the memcpy size argument when offs\n returned by ieee80211_ie_split() exceeds ies_len, causing\n unsigned subtraction to wrap to SIZE_MAX and triggering a\n fortify panic.\n\nFix this by validating the IE buffer in cfg80211_wext_siwgenie()\nbefore storing it.\n\n[drop unnecessary ie_len check, update commit message]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/wireless/wext-sme.c"], "versions": [{"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "269498ce6c1e2132b072aa0c8660404926008f03", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "685082f4be77f4657b498ebbe9f942ef65c492cf", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "8b921a8993469a3482e0c67b5ce5cb6ce93f5f61", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "d01f1600e8b075aa17adb751ac9881bb6ee40dcc", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "c970879e03b23a27df42caf7ba506485a165fb96", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "01cc395cecfaa73134d39fb9a401d9605d8bb2c5", "status": "affected", "versionType": "git"}, {"version": "f21293549f60f88c74fcb9944737f11048896dc4", "lessThan": "a2f5286ca4f304d3fd469f01b96b518608912a5c", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/wireless/wext-sme.c"], "versions": [{"version": "2.6.32", "status": "affected"}, {"version": "0", "lessThan": "2.6.32", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.271", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.222", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.189", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.158", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.111", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.53", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.10.271"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "5.15.222"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.1.189"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.12.111"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "6.18.53"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "2.6.32", "versionEndExcluding": "7.2"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/269498ce6c1e2132b072aa0c8660404926008f03"}, {"url": "https://git.kernel.org/stable/c/685082f4be77f4657b498ebbe9f942ef65c492cf"}, {"url": "https://git.kernel.org/stable/c/8b921a8993469a3482e0c67b5ce5cb6ce93f5f61"}, {"url": "https://git.kernel.org/stable/c/d01f1600e8b075aa17adb751ac9881bb6ee40dcc"}, {"url": "https://git.kernel.org/stable/c/c970879e03b23a27df42caf7ba506485a165fb96"}, {"url": "https://git.kernel.org/stable/c/01cc395cecfaa73134d39fb9a401d9605d8bb2c5"}, {"url": "https://git.kernel.org/stable/c/a2f5286ca4f304d3fd469f01b96b518608912a5c"}], "title": "wifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/wireless/wext-sme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "269498ce6c1e2132b072aa0c8660404926008f03", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "685082f4be77f4657b498ebbe9f942ef65c492cf", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "8b921a8993469a3482e0c67b5ce5cb6ce93f5f61", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "d01f1600e8b075aa17adb751ac9881bb6ee40dcc", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "c970879e03b23a27df42caf7ba506485a165fb96", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "01cc395cecfaa73134d39fb9a401d9605d8bb2c5", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}, {"lessThan": "a2f5286ca4f304d3fd469f01b96b518608912a5c", "status": "affected", "version": "f21293549f60f88c74fcb9944737f11048896dc4", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/wireless/wext-sme.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "2.6.32"}, {"lessThan": "2.6.32", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.271", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.222", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.189", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.158", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.111", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.53", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate IEs in cfg80211_wext_siwgenie()\n\nThe KASAN allocation trace shows that a malformed IE buffer is\nstored via SIOCSIWGENIE (cfg80211_wext_siwgenie()) without any\nvalidation. The crash trace shows that a subsequent SIOCSIWESSID\ntriggers a connection attempt which calls cfg80211_sme_get_conn_ies()\nto process the stored IE buffer, causing:\n\n - An out-of-bounds read in skip_ie() which reads ies[pos+1]\n (the length byte) past the end of the 1-byte buffer.\n\n - An integer underflow in the memcpy size argument when offs\n returned by ieee80211_ie_split() exceeds ies_len, causing\n unsigned subtraction to wrap to SIZE_MAX and triggering a\n fortify panic.\n\nFix this by validating the IE buffer in cfg80211_wext_siwgenie()\nbefore storing it.\n\n[drop unnecessary ie_len check, update commit message]"}], "id": "CVE-2026-93784", "lastModified": "2026-10-03T11:17:47.927", "metrics": {}, "published": "2026-09-24T17:17:11.017", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/01cc395cecfaa73134d39fb9a401d9605d8bb2c5"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/269498ce6c1e2132b072aa0c8660404926008f03"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/685082f4be77f4657b498ebbe9f942ef65c492cf"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8b921a8993469a3482e0c67b5ce5cb6ce93f5f61"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a2f5286ca4f304d3fd469f01b96b518608912a5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/c970879e03b23a27df42caf7ba506485a165fb96"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d01f1600e8b075aa17adb751ac9881bb6ee40dcc"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,c970879e03b23a27df42caf7ba506485a165fb96)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,01cc395cecfaa73134d39fb9a401d9605d8bb2c5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[1da177e4c3f41524e886b7f1b8a0c1fc7321cac2,a2f5286ca4f304d3fd469f01b96b518608912a5c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.12.111)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.18.53)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.12.111,6.12.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[6.18.53,6.18.*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2, *]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-24T19:45:17.642816+00:00", "updated": "2026-09-25T07:30:16.660191+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-788", "CWE-191"]}